PBS-3
Selector Switch Station
With Start / Stop Pushbuttons
A pre-wired, labelled and tested three-device motor control station built on Siemens SIRIUS ACT 3SU pilot devices in a Saginaw 3PBGX painted steel enclosure. A maintained three-position selector gives ON / OFF / AUTO mode selection, and two momentary black pushbuttons give START and STOP — all four contacts on one M12 8-pin connector.
- ON / OFF / AUTO selectionThree-position maintained selector, two contacts, for hand and automatic mode
- START and STOP pushbuttonsMomentary, non-illuminated, one 1 N.O. contact each
- One M12 cable to the machine8-pin A-coded male bulkhead with a 3.2 ft pigtail carries all four contacts and PE
- Re-legendable in the fieldEvery device carries a snap-in labelling plate in a label holder
- Indoor and outdoor ratedSaginaw 3PBGX painted steel with integral mounting feet
- Documented as builtSchematic, model view, cable diagram and bill of material ship with every station

At a glance
What is inside
Operators 3 devices
Three 22 mm SIRIUS ACT positions on the door, each with its own label holder and snap-in legend plate.
- Selector switch, 3 position3SU1052-2BL60-0AA0 · maintained, I-O-II
- Pushbutton, black · START3SU1050-0AB10-0AA0 · momentary
- Pushbutton, black · STOP3SU1050-0AB10-0AA0 · momentary
- Contact modules, 1 N.O.(4) 3SU1400-1AA10-1BA0
- Label holders and plates(3) 3SU1900-0AR10-0AA0 with 3SU1900-0AC81-0AA0
Connection M12, 8-pin
All four contacts share a common 24 VDC feed and return to the PLC on one A-coded connector.
- Selector, position INormally open
- Selector, position IINormally open
- STARTNormally open, momentary
- STOPNormally open, momentary
- GroundBonded to the enclosure and the door
The STOP pushbutton is a control device with a normally-open contact, not a safety stop. Where a machine needs an emergency stop, pair this station with a PBS-1 or PBS-2.
Documentation and downloads
Selector Switch Station with Start / Stop Pushbuttons
Selector Switch Station with Start / Stop Pushbuttons
Part number: PBS-3 | Drawing D10044 | Think-PLC Ready-Set-Go Series
A pre-wired, labelled and tested three-device motor control station built on Siemens SIRIUS ACT 3SU pilot devices in a Saginaw 3PBGX painted steel enclosure. A three-position maintained selector switch gives ON / OFF / AUTO mode selection, and two momentary black pushbuttons provide START and STOP commands.
All four normally-open contacts share a common 24 VDC feed and land on a single M12 8-pin A-coded male bulkhead with a 3.2 ft pigtail, so the station wires to a machine or a remote I/O drop with one cable. Legends are snap-in plates held in label holders, so the station can be re-legended in the field without changing hardware. Each unit ships with the customer drawing package it was built from: schematic, model view, cable diagram and bill of material.
Specifications
- Enclosure: Saginaw 3PBGX painted steel, indoor/outdoor rated, integral mounting feet
- Dimensions: 3-9/16 in × 4-7/8 in × 8-3/8 in (90.5 × 123.4 × 213.4 mm)
- Selector: Siemens 3SU1052-2BL60-0AA0, 3-position maintained (I-O-II), ON / OFF / AUTO legend
- Pushbuttons: (2) Siemens 3SU1050-0AB10-0AA0 black momentary — START and STOP
- Contacts: (4) 1 N.O. contact modules on a common 24 VDC feed
- Field connection: M12 8-pin male, A-coded bulkhead, 3.2 ft pigtail
- Legends: snap-in labeling plates in label holders — re-legendable in the field
- Documentation: customer drawing package (schematic, model view, cable diagram, BOM)
- Designed, built and tested in Lexington, NC, USA
Ordering: Standard configurations are available for direct online purchase. For purchase orders, custom modifications or application support, contact THINK-PLC to configure the solution to your requirements.
Freight is billed separately and is not included at checkout. We will contact you after your order with a freight quote and delivery options; shipment is scheduled after approval. All products are made to order and lead times vary with specification and order volume.